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Name: Lisa
Status: student
Age: 20s
Location: N/A
Country: N/A
Date: 2000-2001
Question:
What is Fog Lift?

context - when walking through a swamp the area is foggy, later in the day when the sun is higher the fog has "lifted" What really happened?

Replies:
Lisa,

Fog doesn't really lift. As the sun warms the surface the warmed ground warms the air, raising the air temperature above the temperature at which water vapor condenses into a cloud (fog is just a cloud near the Earth's surface). The sun can penetrate the early morning fog enough to warm the surface and create the appearance that the fog is lifting.

David Cook
Argonne National Laboratory



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